What's with the newborn heart murmur?

Neonatal heart murmur may be related to physiological factors and pathological factors, pathological factors mainly include atrial septal defect, pulmonary stenosis, etc.

First, physiological factors fetal ductus arteriosus is

not completely closed, generally in the months after birth gradually closed, auscultation can be found heart murmur, similar to the sound of blood flow through, belongs to normal phenomenon.

Second, pathological factors

1, atrial septal defect

congenital heart disease etiology unknown, may be due to genetic and genetic defects, due to the existence of shunt in the heart, can cause heart murmur.

2, pulmonary artery stenosis

Pulmonary artery stenosis is mainly due to congenital heart development abnormalities caused by pulmonary artery blood flow obstruction, auscultation can hear heart murmur.